﻿using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void label1_Click(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            String currentColor = lightColor.Text;
            if (currentColor.Equals("Red"))
                lightColor.Text = "Green";
            else if (currentColor.Equals("Green"))
                lightColor.Text = "Yellow";
            else
                lightColor.Text = "Red";
        }
    }
}
